At times, you feel uneasy in the presence of a certain person. When you enter a room, you have this sense that something is wrong. The human aura is a strong electro-magnetic field. We give off electrical energy and absorb magnetic one.
You can feel this energy force in a room full of people, where varying energies, positive and negative, are being interchanged.
The aura is an extension of our energies, be it strong or weak, fair or otherwise, light and bright or dull and dense. It is a band of energy that surrounds us, a life energy that can be sensed around every living thing, plants, trees, animals, birds and people.
There are seven layers of aura, but the most accessible to the human perception are the first three layers surrounding the human body. Auras can be seen with the eyes wide open or it can also be seen psychically with the eyes closed.